Shield Volcano: A wide, gently sloping mountain. Cinder Cone: A steep, cone-shaped hill or mountain. Composite Volcano: Tall, cone-shaped mountains in which layers of lava alternate with layers of ash. Caldera: A huge hole that forms after a volcano collapses inward. Volcanic Neck: When magma hardens in a volcano's pipe a volcano neck forms. Dike: When magma forces itself across many rock layers and then hardens it is called a dike Sill: When magma squeezes between layers of rock it forms a sill. Batholith: A mass of rock formed when a large body of magma cools inside the crust.
Outline
Landforms from Lava and Ash
Shield Volcanoes
Layers of lava pour out and harden
Eventually the lava builds a gently sloping mountains
Ex. Mauna Loa
Cinder Cone Volcanoes
When the lava is thick, it forms a cinder cone volcanoes
Ex. Paricutin
Composite volcanoes
Tall cone shaped mountains
Ex. Mt. Fuji and Mt. St. Helens
Lava Plateaus
After an eruption, sometimes the lava forms a plateau instead of a mountain
Ex. The Columbia Plateau
Calderas
After a volcano erupts and all the lava is gone, the volcano implodes and turns into a hole'
Table of Contents
3.3 Volcanic Landforms
Vocabulary
Shield Volcano: A wide, gently sloping mountain.Cinder Cone: A steep, cone-shaped hill or mountain.
Composite Volcano: Tall, cone-shaped mountains in which layers of lava alternate with layers of ash.
Caldera: A huge hole that forms after a volcano collapses inward.
Volcanic Neck: When magma hardens in a volcano's pipe a volcano neck forms.
Dike: When magma forces itself across many rock layers and then hardens it is called a dike
Sill: When magma squeezes between layers of rock it forms a sill.
Batholith: A mass of rock formed when a large body of magma cools inside the crust.
Outline
Landforms from Lava and Ash